50011557 has 4 divisors (see below), whose sum is σ = 66682080. Its totient is φ = 33341036.

The previous prime is 50011543. The next prime is 50011561. The reversal of 50011557 is 75511005.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50011557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50011957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8335257 + ... + 8335262.

It is an arithmetic number, because the mean of its divisors is an integer number (16670520).

Almost surely, 2^50011557 is an apocalyptic number.

It is an amenable number.

50011557 is a deficient number, since it is larger than the sum of its proper divisors (16670523).

50011557 is a wasteful number, since it uses less digits than its factorization.

50011557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16670522.

The product of its (nonzero) digits is 875, while the sum is 24.

The square root of 50011557 is about 7071.8849679559. The cubic root of 50011557 is about 368.4315319121.

The spelling of 50011557 in words is "fifty million, eleven thousand, five hundred fifty-seven".